In Finland we're working towards the impossible when price of gas consists of 100% tax. It's at about 70% at the moment if I remember correctly + VAT, which is 23%. We pay about 6.5€/Gallon or 1.6€/liter. I guess that is about $8-$10/Gallon. Guess what, people still drive cars and roads are congested. We also pay a lot of import tax on cars, but I won't go into that
So even with heavy taxation driving is more desirable that taking the Bus or Train and public transportation system here in the Helsinki area is actually quite comprehensive. To kill this method of transportation Finnish government would need to give up lucrative taxes, prop up electric vehicles or what ever we invent in next forty years and their questionable environmental impact, and private sector should take a gamble and build the infrastructure. Maybe that will happen, but it will be much more intricate play of policies, transfer of money from one sector to another than just simple ban on petrol vehicles in the city centers.
Alright
So I think this kind of "bans" or regulations are empty posturing and waste of time and smug MEPs passing these should be laughed out of Brussels or told to do something productive.
In forty years we will probably have different methods of transportation (I'll be using a cool cane with a sword in it), but this decision has nothing to do with that.
Europe should spend money on basic research, experimenting with new ideas and taxing petrol if different forms of transportation are desired.
"Imitation is the sincerest form of television." -- The New Mighty Mouse